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What 3 types of Selection pressures that affect a population structure?
Wiki User
∙ 8y ago
The 3 types of selection pressure on a population:
1) "Stabilizing selection" = intermediate phenotypes are favored and extremes on both ends are eliminated.
2)"Directional selection" = is a mode of natural selection in which a single phenotype is favored, causing the allele frequency to continuously shift in one direction.
3) "Disruptive selection/ Diversifying selection" = describes changes in population genetics in which extreme values for a trait are favored over intermediate values
Wiki User
∙ 11y ago
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How does higher pressure affect rocks?
When rocks are subjected to high pressures, they can change their formation and appearance. This process, which alters the structure of a rock, is called metamorphism.
What happens to unnecessary traits during the process of natural selection?
How does natural selection affect undesirable traits?
Which evolutionary mechanisms could affect allele frequencies in a population being maintained in captivity?
natural selection, genetic drift, and mutation
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It Depends On The Number Of People in The Population (:
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Yes.
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How does higher pressure affect rocks?
When rocks are subjected to high pressures, they can change their formation and appearance. This process, which alters the structure of a rock, is called metamorphism.
Is natural selection the only force that drives biological evolution?
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Because their population grows and their thing grows ;)
How does environmental pressure affect natural selection?
When nothing happens to exert strong population pressure on that population, natural selection favors the allele frequency already present. When mutations cause new traits, natural selection weeds these traits out because they're not as efficient as the others.
What happens to unnecessary traits during the process of natural selection?
How does natural selection affect undesirable traits?
Which evolutionary mechanisms could affect allele frequencies in a population being maintained in captivity?
natural selection, genetic drift, and mutation
How does the age structure pf a population affect its growth rate?
It Depends On The Number Of People in The Population (:
How do humans affect artificial selection?
Humans directly affect artificial selection. They do this by selecting the specific traits that they prefer which they cannot don in a natural selection.
How does gene flow affect the fitness of population?
Gene flow within a population distributes mutations among the individuals. Immigration and emigration transport alleles into and out of a population's gene pool, thus affecting the result of natural selection.
